Metadata

Citable URI

As published

Keyword

Abstract

Marine hydrocarbon seepage emits oil and gas, including methane (~30 Tg
CH4/year), to the ocean and atmosphere. Sediments from the California margin
contain preserved tar, primarily formed via hydrocarbon weathering at the sea
surface. We present a record of variation in the abundance of tar in sediments for
the past 32ky, providing evidence for increases in hydrocarbon emissions prior to
and during Termination IA (16-14 ka) and again over Termination IB (11-10 ka).
Our study provides the first direct evidence for increased hydrocarbon seepage
associated with deglacial warming via tar abundance in marine sediments,
independent of previous geochemical proxies. Climate-sensitive gas hydrates may
modulate thermogenic hydrocarbon seepage during deglaciation.

A new 2400-year paleoclimate reconstruction from Chesapeake Bay (CB) (eastern US) was compared to other paleoclimate records in the North Atlantic region to evaluate climate variability during the Medieval Climate Anomaly ...

Agriculture and industrial development have led to inadvertent changes
in the natural carbon cycle. As a consequence, concentrations of carbon dioxide and other greenhouse gases have increased in the atmosphere and may ...

All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
A service of the MBLWHOI Library |
About WHOAS